[gradsusr] how to use vint function in GrADS

[MY]

Hi, Sushant,

I think 'd a' is enough. Please refer to the document for vint().

best wishes,
++++++++++++++++++++++++++++++++++++++++++++++++++++
YING, Ming
Shanghai Typhoon Institute of China Meteorological Administration
166 Puxi Road, Xuhui District, Shanghai, 200030
PR China
++++++++++++++++++++++++++++++++++++++++++++++++++++





2010/7/23 sushant puranik <sushantpuranik at gmail.com>:
> Thank you for suggestion. Actually i want to calculate following integral.
>
>                 1000
>
> Q = (1/g) ∫ (V q)dp.
>
>              400
>
> I used this kind of command in grads
>
> 'define ps=1000'
> 'define a=vint(ps,vwnd*shum,400)'
> 'd a/9.81'
> with this command i am able to make a plot.
>
> whether it is correct or not ?
>
> Thanking you
>
>
> Sushant
>
> On Fri, Jul 23, 2010 at 10:38 AM, MY <funnytyphoon at gmail.com> wrote:
>>
>> Hi,
>>
>> please try
>>
>> 'define ps=1000'
>> 'd vint(ps,vwnd*shum,400)'
>>
>> best wishes,
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++
>> YING, Ming
>> Shanghai Typhoon Institute of China Meteorological Administration
>> 166 Puxi Road, Xuhui District, Shanghai, 200030
>> PR China
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++
>>
>>
>>
>>
>>
>> 2010/7/23 sushant puranik <sushantpuranik at gmail.com>:
>> > Hi
>> > I am trying to find vertical integral in GrADS using "vint" command. For
>> > that purpose i opened vwnd and specific humidity file as first and
>> > second
>> > respectively. The q file command for both the variable are as
>> >
>> > ga-> q file
>> > File 1 : mean daily NMC reanalysis (2008)
>> >   Descriptor: /home/Sushant/Desktop/10may08v.nc
>> >   Binary: /home/Sushant/Desktop/10may08v.nc
>> >   Type = Gridded
>> >   Xsize = 29  Ysize = 25  Zsize = 8  Tsize = 1
>> >   Number of Variables = 1
>> >     vwnd 8 -999 mean Daily V wind
>> >
>> > ga-> q file 2
>> > File 2 : mean daily NMC reanalysis (2008)
>> >   Descriptor: /home/Sushant/Desktop/10may08q.nc
>> >   Binary: /home/Sushant/Desktop/10may08q.nc
>> >   Type = Gridded
>> >   Xsize = 29  Ysize = 25  Zsize = 8  Tsize = 1
>> >   Number of Variables = 1
>> >     shum 8 -999 mean Daily specific humidity
>> >
>> > after this i used
>> >
>> > ga->  d vint(1000,vwnd*shum.2,400)
>> > gxstart=0, gxstop=29, gystart=0, gystop=25.
>> > gzstart=0, gzstop=1, gtstart=0, gtstop=1.
>> > gxstart=0, gxstop=29, gystart=0, gystop=25.
>> > gzstart=0, gzstop=1, gtstart=0, gtstop=1.
>> > Error from VINT:  Incompatible grids.
>> > Contouring: -0 to 2.4e+36 interval 3e+35
>> > Segmentation fault
>> >
>> > after showing this message, the grads window gets closed.
>> >
>> > Can anyone has solution for this perticular problem.
>> >
>> > Thanks in advance
>> >
>> >
>> > --
>> > Sushant
>> >
>> >
>> > _______________________________________________
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>> > gradsusr at gradsusr.org
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>> >
>> >
>>
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